Vehicle-mounted type back scattering inspection system

ABSTRACT

The present disclosure discloses a vehicle-mounted type back scattering inspection system. The vehicle-mounted type back scattering inspection system includes a carriage and a back scattering imaging device, the scanning range of the back scattering imaging device is variable. As the scanning range of the back scattering imaging device of the present disclosure is variably set, the inspection range of the back scattering imaging device can be expanded.

CROSS-REFERENCES TO RELATED APPLICATIONS

The present application claims priority from Chinese application numberCN201711467939.9 filed Dec. 29, 2017, which is herein incorporated byreference.

The present disclosure relates to the technical field of safetyinspection, and in particular to a vehicle-mounted type back scatteringinspection system.

BACKGROUND

The X-ray back scattering imaging technique is a technique for imagingby detecting back scattering photons of an object while using apen-shaped X-ray beam to illuminate the object. In a vehicle-mountedtype back scattering inspection system, an X-ray back scattering imagingdevice is installed in a carriage to perform scattering ray imaging onthe inspected object. The appearance of the system is not much differentfrom that of an ordinary van, so it has good inspection concealment: thesystem can perform scanning while passing by a scanned vehicle that isparked on the roadside or in a parking lot, and generate a scanned imagein real time. In addition, the system also has good maneuverability andcan be quickly transferred for use in different occasions.

However, when neither the above-described vehicle-mounted type backscattering inspection system nor the inspected object can move back andforth, the back scattering imaging device can only scan one plane of theinspected object, so that the inspection range is limited.

SUMMARY

The objective of the present disclosure is to provide a vehicle-mountedtype back scattering inspection system to expand the scanning range ofthe vehicle-mounted type back scattering inspection system.

The present disclosure provides a vehicle-mounted type back scatteringinspection system, including a carriage and a back scattering imagingdevice, and the scanning range of the back scattering imaging device isvariable.

Further, the back scattering imaging device includes a back scatteringimaging module, and the back scattering imaging module is rotatablyarranged to change the scanning range of the back scattering imagingdevice.

In some embodiments of the present disclosure, the back scatteringimaging module is rotatably arranged around a vertical shaft.

In some embodiments of the present disclosure, the vehicle-mounted typeback scattering inspection system further includes a tray arranged inthe carriage and rotatably arranged relative to the carriage, and in avehicle-mounted working state in which the back scattering imagingdevice performs inspection work in the carriage, the back scatteringimaging device is fixedly arranged on the tray to rotate under the driveof the tray.

In some embodiments of the present disclosure, the back scatteringimaging device includes a back scattering imaging module and a carriermodule for carrying the back scattering imaging module, and the backscattering imaging module is rotatably arranged relative to the carriermodule.

In some embodiments of the present disclosure, the back scatteringimaging device includes a back scattering imaging module, the backscattering imaging module includes a ray source and a detector, the backscattering imaging device has a vehicle-mounted working state and aground working state, and in the vehicle-mounted working state, the backscattering imaging device performs inspection work in the carriage; inthe ground working state, the back scattering imaging device performsthe inspection work on the ground at the outside of the carriage; andthe back scattering imaging device is separately arranged relative tothe carriage and is movable between the carriage and the ground so as toswitch between the vehicle-mounted working state and the ground workingstate.

In some embodiments of the present disclosure, the back scatteringimaging device includes wheels at the bottom.

In some embodiments of the present disclosure, in the vehicle-mountedworking state, the wheels are self-locked to prevent the wheels fromrolling; and during switching from the vehicle-mounted working stateinto the ground working state, the wheels are unlocked to roll from thecarriage to the ground.

In some embodiments of the present disclosure, the vehicle-mounted typeback scattering inspection system further includes a position lockingdevice, the position locking device has a locked position and anunlocked position, and in the vehicle-mounted working state, theposition locking device is at the locked position to prevent the backscattering imaging device from moving; and in the ground working state,the position locking device is at the unlocked position to enable theback scattering imaging device to move.

In some embodiments of the present disclosure, the back scatteringimaging device includes a back scattering imaging module and a carriermodule for carrying the back scattering imaging module, and the moduleis configured to drive the back scattering imaging module to move.

In some embodiments of the present disclosure, the vehicle-mounted typeback scattering inspection system further includes a channel structure,and the channel structure is used for providing a channel for the backscattering imaging device to move between the carriage and the ground.

In some embodiments of the present disclosure, the carriage includes acarriage body having an opening, and the channel structure includes aplate body arranged at the opening, wherein the plate body is rotatablyarranged relative to the carriage body to form an inclined planeextending from the carriage body to the ground, the back scatteringimaging device is configured to be movable along the inclined plane toleave or enter the carriage body; and/or, the plate body is movablyarranged along vertical direction to drive the back scattering imagingdevice to move between the height where the carriage body is located andthe ground.

In some embodiments of the present disclosure, the plate body is usedfor opening or closing the opening of the carriage body, and in thevehicle-mounted working state, the plate body closes the opening; and inthe ground working state, the plate body opens the opening.

In some embodiments of the present disclosure, the vehicle-mounted typeback scattering inspection system further includes a controller arrangedin the carriage and coupled with the back scattering imaging device, andin the vehicle-mounted working state, the controller controls the backscattering imaging device to work; and in the ground working state, thecontroller remotely controls the back scattering imaging device to work.

In some embodiments of the present disclosure, the vehicle-mounted typeback scattering inspection system further includes a power supplydevice, and the power supply device is used for supplying power to theback scattering imaging device in the movement or the inspection work.

In some embodiments of the present disclosure, the power supply deviceincludes an electrical connector for an electrical connection with themains supply and/or a generator and/or a battery.

In some embodiments of the present disclosure, the power supply deviceincludes an electrical connector for an electrical connection with themains supply, a generator and a battery, the generator is fixedlyarranged in the carriage, the back scattering imaging device includesthe battery and a back scattering imaging module, and in thevehicle-mounted working state, the electrical connector is electricallyconnected with the mains supply for supplying power to the backscattering imaging module or charging the battery, or the generatorsupplies power to the back scattering imaging module and/or charges thebattery; and in the ground working state, the battery supplies power tothe back scattering imaging device in the movement or the inspectionwork.

In some embodiments of the present disclosure, the vehicle-mounted typeback scattering inspection system further includes a face recognitiondevice and/or a millimeter wave imaging device arranged in the carriage.

Based on the technical solution provided by the present disclosure, thevehicle-mounted type back scattering inspection system includes thecarriage and the back scattering imaging device, and the scanning rangeof the back scattering imaging device is variable. The scanning range ofthe back scattering imaging device of the present disclosure is variablyset, so that the inspection range of the back scattering imaging devicecan be expanded.

Other features of the present disclosure and advantages thereof willbecome apparent from the following detailed description of exemplaryembodiments of the present disclosure with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are intended to provide a furtherunderstanding of the present disclosure, and constitute a part of thepresent application. The illustrative embodiments of the presentdisclosure and the descriptions thereof are used for explaining thepresent disclosure and do not constitute undue limitations of thepresent disclosure. In the drawings:

FIG. 1 is a structural schematic diagram of a vehicle-mounted type backscattering inspection system in an embodiment of the present disclosure;

FIG. 2 is a structural schematic diagram of an embodiment in which aback scattering imaging device in FIG. 1 moves from a carriage to theground;

FIG. 3 is a structural schematic diagram of another embodiment in whichthe back scattering imaging device in FIG. 1 moves from the carriage tothe ground;

FIG. 4 is a structural schematic diagram of the back scattering imagingdevice as shown in FIG. 1 in a ground working state;

FIGS. 5 to 7 are schematic diagrams illustrating the back scatteringimaging device as shown in FIG. 1 rotates under the drive of a tray tochange the scanning range.

FIG. 8 is a structural schematic diagram of a vehicle-mounted type backscattering inspection system in an embodiment of the present disclosure.

Reference signs: 1—carriage; 11—carriage body; 12—plate body; 2—backscattering imaging device; 21 ray source; 22—detector; 23—battery;24—carrier module; 241—carrier body; 242—wheel; 3—generator; 4—signaltransceiving device; 5—system workstation; 6—tray; Q-inspected object;7—electrical connector; 8—face recognition device; 9—millimeter-waveimaging device; 10—position locking device; 20—mains supply.

DETAILED DESCRIPTION OF THE INVENTION

The technical solutions in the embodiments of the present disclosure areclearly and completely described below with reference to the drawings inthe embodiments of the present disclosure. Obviously, the describedembodiments are only a part of the embodiments of the presentdisclosure, but not all embodiments. The following descriptions of atleast one exemplary embodiment are merely illustrative, and are in noway to limit the present disclosure or the application thereof or theuse thereof. All other embodiments obtained by those skilled in the artbased on the embodiments of the present disclosure without creativeefforts shall all fall within the protection scope of the presentdisclosure.

The relative arrangements of the components and the steps, numericalexpressions and numerical values set forth in these embodiments are notintended to limit the scope of the present disclosure, unless otherwisespecified. Moreover, it should be understood that for the convenience ofdescription, the dimensions of the various parts shown in the drawingsare not drawn in the actual scale relationship for the convenience ofdescription. Techniques, methods and devices known to those of ordinaryskill in the related art may not be discussed in detail, but undersuitable circumstances, the techniques, the methods and the devicesshould be considered as a part of the specification as granted. In allexamples shown and discussed herein, any specific values should beconstrued as illustrative only and are not used as limitations.Accordingly, other examples of the exemplary embodiments may havedifferent values. It should be noted that similar reference signs andletters represent similar items in the following drawings, andtherefore, once a certain item is defined in one drawing, it does notneed to be further discussed in the subsequent drawings.

For the convenience of description, spatially relative terms such as “atthe upper side of . . . ”, “above . . . ”, “on the upper surface of . .. ”, “on . . . ” and the like may be used herein to describe the spatialpositional relationship of one device or feature with other devices orfeatures in the drawings shown herein. It should be understood that thespatially relative terms are intended to encompass differentorientations in use or operation in addition to the orientations of thedevice described in the drawings. For example, if the device in thedrawing is inverted, the device described as being “above other devicesor configurations” or “on other devices or configurations” will bepositioned “below the other devices or configurations” or “under theother devices or configurations.” Thus, the exemplary term “above . . .” can include both “at the upper side of . . . ” and “at the lower sideof . . . ”. The device can also be positioned in other different ways(rotated 90 degrees or at other orientations) and the spatial relativedescriptions used herein are explained accordingly.

The scanning range of the back scattering imaging device of theembodiment of the present disclosure is variably set. The scanning rangeof the back scattering imaging device of the embodiment of the presentdisclosure is variably set, so that the inspection range of the backscattering imaging device can be expanded.

In the present embodiment, the back scattering imaging module isrotatably arranged around a vertical shaft so that the scanning range ofthe back scattering imaging device is variable.

As shown in FIGS. 5 to 7, when the back scattering imaging module is notrotatable, in the case that the back scattering imaging module and aninspected object Q are both fixed, the back scattering imaging modulecan only perform imaging inspection on a plane a of the inspected objectQ.

When the back scattering imaging module rotates an angle θ around thevertical shaft counterclockwise, the back scattering imaging moduleperforms the imaging inspection on a plane b of the inspected object Q.When the back scattering imaging module rotates the angle θ around thevertical shaft clockwise, the back scattering imaging module performsthe imaging inspection on a plane c of the inspected object Q.Therefore, the back scattering imaging module of the present embodimentis capable of imaging an area between the plane b and the plane c of theinspected object Q.

In some embodiments, in the inspection system, a suitable angle intervalcan is set within a rotatable angle of the back scattering imagingmodule.

The back scattering imaging device of the present embodiment can expandthe inspection range and scan the inspected object within a certainrange when the back scattering imaging device itself cannot move backand forth and the inspected object cannot move back and forth. Moreover,the back scattering imaging device can also perform key inspection on asuspect area when it has been positioned in the suspect area.

The above angle θ can be a small angle to achieve the key inspection. Itcan also be a large angle to achieve wide-range inspection of theinspected object without moving.

In some embodiments, the range of θ is [−45°, 45°].

In order to realize the rotation of the back scattering imaging module,as shown in FIG. 1, the vehicle-mounted type back scattering inspectionsystem of the present embodiment further includes a tray 6 located in acarriage 1. The back scattering imaging device 2 is arranged on the tray6, and the tray 6 is rotatably arranged relative to the carriage 1 todrive the back scattering imaging device 2 to rotate.

In some embodiments, the back scattering imaging module is rotatablyarranged relative to a carrier module 24. Due to such configuration, theback scattering imaging device 2 can change the scanning range both in avehicle-mounted working state and a ground working state. As shown inFIGS. 1-4, and 8, the carrier module 24 includes a carrier body 241.

When the vehicle-mounted type back scattering inspection system is inthe vehicle-mounted working state, the vehicle-mounted type backscattering inspection system can control the tray 6 to rotate or controlthe back scattering imaging module to rotate relative to the carriermodule 24 to change the scanning range. In the ground working state, thevehicle-mounted type back scattering inspection system can control theback scattering imaging module to rotate relative to the carrier module24 to change the scanning range.

The included angle between a beam emitting direction of rays andtransverse direction of the vehicle is changed from 0 to θ in thevehicle-mounted type back scattering inspection system of the presentembodiment so as to scan the inspected object Q within a certain rangewhen neither the inspection system nor the inspected object Q moves.Moreover, key inspection can also be performed on a suspected area ofthe inspected object on which the initial scanning is completed.

As shown in FIGS. 1 to 7, the vehicle-mounted type back scatteringinspection system of the embodiment of the present disclosure includes acarriage 1 and a back scattering imaging device 2. The back scatteringimaging device 2 has a vehicle-mounted working state and a groundworking state. As shown in FIG. 1, in the vehicle-mounted working state,the back scattering imaging device 2 performs inspection work in thecarriage 1. As shown in FIG. 4, in the ground working state, the backscattering imaging device 2 performs the inspection work on the groundat the outside of the carriage 1. The back scattering imaging device 2of the present embodiment is separately arranged relative to thecarriage 1 and is movable between the carriage 1 and the ground toswitch between the vehicle-mounted working state and the ground workingstate.

The back scattering imaging device 2 of the vehicle-mounted type backscattering inspection system is separately arranged relative to thecarriage 1 and is movable between the carriage 1 and the ground,compared with the vehicle-mounted type back scattering inspection systemin the prior art, in a scene where the vehicle cannot enter, the backscattering imaging device 2 can move from the carriage 1 to the groundto switch to the ground working state so as to perform the inspectionwork, thereby expanding the applicable range of vehicle-mounted typeback scattering inspection system.

For example, when it needs to inspect a narrow area inaccessible to thevehicle, the back scattering imaging device 2 of the present embodimentcan be controlled to leave the carriage 1 and move to theabove-mentioned narrow area to perform the inspection work. For example,in some dangerous places that are highly dangerous and inconvenient fordrivers to enter by driving the vehicles, the back scattering imagingdevice 2 can be remotely controlled to enter the dangerous places toperform the inspection work.

As shown in FIG. 1, the back scattering imaging module of the presentembodiment includes a ray source device 21 and a detector 22. The raysource device 21 includes a ray source and a flying point device.

The back scattering imaging device 2 of the present embodiment includesa back scattering imaging module and a carrier module 24 for carryingthe back scattering imaging module.

The back scattering imaging module of the present embodiment includestwo detectors 22. The ray source device 21 is arranged between the twodetectors 22 and emits rays outward from the space between the twodetectors 22.

In other embodiments not shown in the drawings, the back scatteringimaging module can also include a detector 22.

The carrier module 24 drives the back scattering imaging module to move.The carrier module 24 is located below the back scattering imagingmodule, carries the back scattering imaging module and has the walkingcapability, and the back scattering imaging module is arranged above thecarrier module 24, so the back scattering imaging module moves under thedrive of the carrier module 24.

In other embodiments not shown in the drawings, the back scatteringimaging device 2 can further include a driving device for driving theback scattering imaging module to move. For example, the driving devicecan be located on the front side of the back scattering imaging moduleto pull the back scattering imaging module, and can also be located onthe back side of the back scattering imaging module to push the backscattering imaging module.

Since there is a certain height between the carriage 1 and the ground,in order to facilitate the movement of the back scattering imagingdevice 2, the vehicle-mounted type back scattering inspection system ofthe present embodiment includes a channel structure. The channelstructure is used for providing a channel for the back scatteringimaging device 2 to move between the carriage 1 and the ground.

The carriage 1 includes a carriage body 11 having an opening. Thechannel structure includes a plate body 12 arranged at the opening. Inone embodiment, as shown in FIG. 2, the plate body 12 is rotatablyarranged relative to the carriage body 11 to form an inclined planeextending from the carriage body 11 toward the ground, and the backscattering imaging device 2 is configured to be movable along theinclined plane to leave or enter the carriage body 11. In anotherembodiment, as shown in FIG. 3, the plate body 12 is movably arrangedalong vertical direction to drive the back scattering imaging device 2to move between the height where the carriage body 11 is located and theheight where the ground is located.

The vehicle-mounted type back scattering inspection system provides achannel for the movement of the back scattering imaging device 2, sothat the back scattering imaging device 2 can smoothly move from thecarriage 1 to the ground, thereby protecting the back scattering imagingdevice 2 from vibration while moving from the carriage 1 to the groundto affect the performance of the back scattering imaging device 2.

In some embodiments, the vehicle-mounted type back scattering inspectionsystem further includes a power supply device, and the power supplydevice supplies power to the back scattering imaging device 2 in themovement or the inspection work. As shown in FIG. 8, the power supplydevice includes an electrical connector 7 for an electrical connectionwith the mains supply 20, a generator 3 and a battery 23.

In the vehicle-mounted working state, the back scattering imaging device2 is powered by the mains supply 20 or the generator 3; and in theground working state, the back scattering imaging device 2 is powered bythe battery 23. Moreover, in the vehicle-mounted working state, thebattery 23 can be charged by the mains supply 20 or the generator 3.

The back scattering imaging device 2 of the present embodiment furtherincludes a battery 23. The battery 23 provides power for the inspectionwork of the back scattering imaging module and the movement of thecarrier module 24.

The structure of the vehicle-mounted type back scattering inspectionsystem according to a specific embodiment of the present disclosure willbe described in detail below with reference to FIGS. 1 to 7.

As shown in FIG. 1, the vehicle-mounted type back scattering inspectionsystem of the present embodiment includes a carriage 1, a backscattering imaging device 2, a generator 3, a signal transceiving device4, and a system workstation 5.

The signal transceiving device 4 comprises a controller that is coupledto the back scattering imaging device 2 and is fixedly arranged in thecarriage 1. In the vehicle-mounted working state, the signaltransceiving device 4 controls the back scattering imaging device 2 toperform inspection work. In the ground working state, the signaltransceiving device 4 remotely controls the movement and the inspectionwork of the back scattering imaging device 2.

The system workstation 5 is used for receiving a scanned image sent bythe back scattering imaging device 2.

In some embodiments, the back scattering imaging device 2 transmits thescanned image to the system workstation 5 in a wireless manner.

In the present embodiment, as shown in FIG. 1, the back scatteringimaging device 2 is located on one side in the width direction in thecarriage 1. Therefore, the back scattering imaging device 2 can performscanning inspection on the inspected object Q passing by one side of thecarriage 1. Of course, the back scattering imaging device 2 can also belocated on the back side in the carriage 1 or on the other side in thewidth direction.

The back scattering imaging device 2 of the present embodiment includesa back scattering imaging module, a battery 23, and a carrier module 24located below the back scattering imaging module and the battery 23. Thecarrier module 24 drives the back scattering imaging module and thebattery 23 to move. The battery 23 supplies power for the movement ofthe carrier module 24 and the inspection work of the back scatteringimaging module.

When the back scattering imaging device 2 is in the vehicle-mountedworking state, the generator 3 supplies power to the back scatteringimaging module and charges the battery 23. In the ground working state,the battery 23 supplies power to the back scattering imaging module andthe carrier module 24. Of course, the battery 23 can also supplies powerto the back scattering imaging module in the vehicle-mounted workingstate.

In the vehicle-mounted working state, the vehicle-mounted type backscattering inspection system can not only control the vehicle to move toinspect the passing inspected vehicles, containers and the like, and thevehicle can also be parked on the roadside or in the vicinity of asecurity checkpoint to inspect the inspected vehicles passing by itsside face in a concealed manner, and at this time, the work of the backscattering imaging device can be powered by the mains supply 20.

In other embodiments not shown in the drawings, the battery 23 can beconfigured to be replaceable. At this time, the battery 23 can becharged by a device other than the vehicle-mounted type back scatteringinspection system. After the battery 23 is exhausted, another chargedbattery is directly used for replacing the exhausted battery.

In the present embodiment, as shown in FIG. 1, the back scatteringimaging module includes a ray source device 21 and two detectors 22respectively located on both sides of the ray source device 21.

As shown in FIGS. 1-4, and 8, the carrier module 24 of the presentembodiment includes wheels 242 at the bottom and the carrier body 241.When the carrier module moves, the wheels 242 roll to reduce thefriction.

In the present embodiment, as shown in FIG. 1, the vehicle-mounted typeback scattering inspection system further includes a tray 6 located inthe carriage 1, and the back scattering imaging device 2 is arranged onthe tray 6. In the vehicle-mounted working state, the back scatteringimaging device 2 is fixedly arranged on the tray 6, and at this time, inorder to prevent the back scattering imaging device 2 from moving andseparating from the tray 6, the wheels 242 of the present embodiment canbe self-locked. When the back scattering imaging device 2 needs switchto the ground working state, the wheels 242 are unlocked to roll fromthe carriage 1 to the ground.

In order to improve the movement convenience of the carrier module 24,the wheels 242 of the present embodiment are Mecanum wheels 242. Due tosuch configuration, the omnidirectional movement of the carrier module24 is facilitated to facilitate the omnidirectional movement of theentire back scattering imaging device 2. Moreover, the Mecanum wheels242 of the present embodiment have a self-locking function.

As shown in FIG. 8, in an embodiment, the vehicle-mounted type backscattering inspection system includes a position locking device 10. Theposition locking device 10 has a locked position and an unlockedposition. In the vehicle-mounted working state, the position lockingdevice 10 is at the locked position to prevent the back scatteringimaging device 2 from moving. In the ground working state, the positionlocking device 10 is at the unlocked position to enable the backscattering imaging device 2 to move.

As shown in FIG. 2, the carriage 1 includes a carriage body 11 having anopening. The channel structure includes a plate body 12 arranged at theopening.

As shown in FIG. 2, in one embodiment, the plate body 12 is rotatablyarranged relative to the carriage body 11 to form an inclined planeextending from the carriage body 11 toward the ground, and the backscattering imaging device 2 may move along the inclined plane to leaveor enter the carriage body 11.

As shown in FIG. 3, in another embodiment, the plate body 12 is movablyarranged in vertical direction to drive the back scattering imagingdevice 2 to move between the height where the carriage body 11 islocated and the height where the ground is located. The back scatteringimaging device 2 firstly moves from the tray 6 onto the plate body 12,and then the plate body 12 causes the back scattering imaging device 2to move downward to the ground, and the back scattering imaging device 2moves from the plate body 12 to the ground.

In an embodiment not shown in the drawings, the plate body 12 can alsobe controlled to lower to a certain height between the carriage body 11and the ground, and then the plate body 12 is controlled to rotate andforms the inclined plane with the ground, so that the back scatteringimaging device 2 moves to the ground along the inclined plane.

In the present embodiment, the carriage 1 further includes a carriagedoor for opening or closing the opening of the carriage body 11. Afterthe carriage door is opened, the back scattering imaging device 2 movesto the ground along the inclined plane formed by the plate body 12.

In other embodiments not shown in the drawings, the plate body 12 candirectly serve as the carriage door for opening or closing the carriagebody 11. At this time, the plate body 12 serves as the passage structurefor providing the passage for the movement of the back scatteringimaging device 2 after the opening of the carriage body 11 is opened.Due to such configuration, the vehicle-mounted type back scatteringinspection system is provided with no special channel structure, andmulti-purpose of one object is achieved, so that the structure of thevehicle mounted type back scattering inspection system is simplified,and the cost is reduced.

The process when the back scattering imaging device 2 moves from thecarriage 1 to the ground is as shown above. The process when the backscattering imaging device 2 moves from the ground to the inside of thecarriage body 1 is reverse to the above process, and thus will not berepeated herein.

In order to make the scanning range of the back scattering imagingdevice 2 variable, the tray 6 of the present embodiment is rotatablyarranged around the vertical shaft relative to the carriage 1. In thevehicle-mounted working state, the back scattering imaging device 2 isfixedly arranged on the tray 6 to rotate under the drive of the tray 6.Moreover, the back scattering imaging module is rotatably arrangedrelative to the carrier module 24. In the vehicle-mounted working state,the vehicle-mounted type back scattering inspection system is controlledto make the tray 6 rotate or the back scattering imaging module rotaterelative to the carrier module 24 so as to change the scanning range. Inthe ground working state, the vehicle-mounted type back scatteringinspection system may be controlled to make the back scattering imagingmodule rotate relative to the carrier module 24 so as to change thescanning range.

As shown in FIG. 5, when the tray 6 rotates an angle θ around thevertical shaft counterclockwise, the back scattering imaging moduleperforms the imaging inspection on a plane b of the inspected object Q.As shown in FIG. 6, when the tray 6 rotates the angle θ around thevertical shaft clockwise, the back scattering imaging module performsthe imaging inspection on a plane c of the inspected object Q.Therefore, the back scattering imaging module of the present embodimentis capable of imaging an area between the plane b and the plane c of theinspected object Q as shown in FIG. 7. Therefore, the back scatteringimaging device 2 of the present embodiment can expand the inspectionrange when itself cannot move back and forth and the inspected objectcannot move back and forth.

In some embodiments, As shown in FIG. 8, the vehicle-mounted type backscattering inspection system of the present embodiment further includesa face recognition device and/or a millimeter wave imaging devicearranged in the carriage 1. In the vehicle-mounted working state, theface recognition device 8 and the millimeter wave imaging device 9 canperform active or concealed inspection on personnel passing through thecarriage 1. During the concealed inspection, when a person is closeenough to the carriage 1, the inspection system can capture a human bodymillimeter wave map and a face image.

What is claimed is:
 1. A vehicle-mounted type back scattering inspectionsystem, comprising: a carriage and a back scattering imaging device,wherein a scanning range of the back scattering imaging device isvariable; wherein the back scattering imaging device comprises a backscattering imaging module, and the back scattering imaging module isrotatably arranged to change the scanning range of the back scatteringimaging device.
 2. The vehicle-mounted type back scattering inspectionsystem according to claim 1, wherein the back scattering imaging moduleis rotatably arranged around a vertical shaft.
 3. The vehicle-mountedtype back scattering inspection system according to claim 2, furthercomprising a tray arranged in the carriage and rotatably arrangedrelative to the carriage, wherein in a vehicle-mounted working state inwhich the back scattering imaging device performs inspection work in thecarriage, the back scattering imaging device is fixedly arranged on thetray to rotate under a drive of the tray.
 4. The vehicle-mounted typeback scattering inspection system according to claim 2, wherein the backscattering imaging device further comprises a carrier module comprisinga carrier body and for carrying the back scattering imaging module, andthe back scattering imaging module is rotatably arranged relative to thecarrier module.
 5. The vehicle-mounted type back scattering inspectionsystem according to claim 1, wherein the back scattering imaging devicehas a vehicle-mounted working state and a ground working state, and inthe vehicle-mounted working state, the back scattering imaging deviceperforms an inspection work in the carriage; in the ground workingstate, the back scattering imaging device performs an inspection work onthe ground at an outside of the carriage; and the back scatteringimaging device is separately arranged relative to the carriage and ismovable between the carriage and the ground to switch between thevehicle-mounted working state and the ground working state.
 6. Thevehicle-mounted type back scattering inspection system according toclaim 5, wherein the back scattering imaging device comprises wheels atthe bottom.
 7. The vehicle-mounted type back scattering inspectionsystem according to claim 6, further comprising a plate body for formingan inclined plane extending from a carriage body to the ground, whereinin the vehicle-mounted working state, the wheels are self-locked toprevent the wheels from rolling; and during switching from thevehicle-mounted working state into the ground working state, the wheelsare unlocked to roll from the carriage to the ground along the inclinedplane.
 8. The vehicle-mounted type back scattering inspection systemaccording to claim 5, further comprising a position locking device,wherein the position locking device has a locked position and anunlocked position, and in the vehicle-mounted working state, theposition locking device is at the locked position to prevent the backscattering imaging device from moving; and in the ground working state,the position locking device is at the unlocked position to enable theback scattering imaging device to move.
 9. The vehicle-mounted type backscattering inspection system according to claim 5, wherein the backscattering imaging device comprises a back scattering imaging module anda carrier module; and the carrier module comprises a carrier body andwheels, and is configured to carry the back scattering imaging moduleand to drive the back scattering imaging module to move.
 10. Thevehicle-mounted type back scattering inspection system according toclaim 5, further comprising a channel structure configured to provide achannel for the back scattering imaging device to move between thecarriage and the ground.
 11. The vehicle-mounted type back scatteringinspection system according to claim 10, wherein the carriage comprisesa carriage body having an opening, and the channel structure comprises aplate body arranged at the opening, wherein the plate body is rotatablyarranged relative to the carriage body to form an inclined planeextending from the carriage body to the ground, the back scatteringimaging device is configured to be movable along the inclined plane toleave or enter the carriage body; and/or, the plate body is movablyarranged along a vertical direction to drive the back scattering imagingdevice to move between the height where the carriage body is located andthe ground.
 12. The vehicle-mounted type back scattering inspectionsystem according to claim 11, wherein the plate body is configured toopen or close the opening of the carriage body, and in thevehicle-mounted working state, the plate body closes the opening; andduring switching between the vehicle-mounted working state and theground working state, the plate body opens the opening.
 13. Thevehicle-mounted type back scattering inspection system according toclaim 5, further comprising a signal transceiving device arranged in thecarriage and coupled with the back scattering imaging device, wherein inthe vehicle-mounted working state, the signal transceiving devicecontrols the back scattering imaging device to work; and in the groundworking state, the signal transceiving device remotely controls the backscattering imaging device to work.
 14. The vehicle-mounted type backscattering inspection system according to claim 5, further comprising apower supply device configured to supply power to the back scatteringimaging device in a movement or the inspection work.
 15. Thevehicle-mounted type back scattering inspection system according toclaim 14, wherein the power supply device comprises a generator and/or abattery and/or an electrical connector, and the electrical connector isconfigured to be electrically connected with a mains supply and/or thegenerator and/or the battery.
 16. The vehicle-mounted type backscattering inspection system according to claim 14, wherein the powersupply device comprises a generator and/or a battery and/or anelectrical connector, the electrical connector is configured to beelectrically connected with a mains supply, the generator, and thebattery, the generator is fixedly arranged in the carriage, the backscattering imaging device comprises the battery and a back scatteringimaging module, and in the vehicle-mounted working state, the electricalconnector is electrically connected with the mains supply for supplyingpower to the back scattering imaging module and/or charging the battery,or the generator supplies power to the back scattering imaging moduleand/or charges the battery; and in the ground working state, the batterysupplies power to the back scattering imaging device in the movement orthe inspection work.
 17. The vehicle-mounted type back scatteringinspection system according to claim 1, further comprising a facerecognition device and/or a millimeter wave imaging device arranged inthe carriage.